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Discussion Starter · #1 ·
From the 1977 FSM courtesy of 91PowerRam.

Ramcharger
front frame--29.88" wide outside of frame rails
4.00" tall inside the frame rail
rear frame--37.68" wide outside of frame rails
5.55" tall inside the frame rails
side rail section--6.06" tall
2.27" flange
0.156" gage (thickness)

D100-D400
front frame--30.30" wide outside of frame rails
4.00" tall inside the frame rail
rear frame--37.68" wide outside of frame rails
5.55" tall inside the frame rails
siderail section --6.06" to 7.20" tall depending on body style
2.27" to 2.79" flange depending on body style
0.156" to 0.250" gage (thickness) depending on body style


W150-W400
front frame--29.88" wide outside of frame rails
4.00" tall inside the frame rail
rear frame--37.68" wide outside of frame rails
5.55" tall inside the frame rails
siderail section --6.06" to 7.20" tall depending on body style
2.27" to 2.79" flange depending on body style
0.156" to 0.250" gage (thickness) depending on body style
 
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Discussion Starter · #2 ·
Frame specifications from the 1975 FSM.

ModelWheel Base Depth Flange Width Rail Gage Section Modulus R.B.M.* Rear Overhang
Conv. Cab
D1001156.062.27.1562.869152038.25
D1001316.062.27.1562.869152042.25
D2001316.172.32.2103.8812416042.25
D2/300 HD1317.202.73.1945.0216064042.25
D3001357.202.73.1945.0216064042.25
D3001597.312.79.2506.5616064048.25
W1001156.122.30.1883.4310976038.25
W1/2001316.172.32.2103.8812416042.25
W3001257.202.73.1945.0216064048.25
Club Cab
D1001337.162.72.1764.5714624038.25
D1/2001497.202.73.1945.0216064042.25
D3001497.232.75.2105.4717504042.25
W1001337.182.72.1884.7515200038.25
W1/2001497.232.75.2105.4717504042.25
Crew Cab
D2001497.202.73.1945.0216064038.25
D2/3001657.312.79.2506.5620992042.25
W2001497.202.73.1945.0216064038.25

*Resisting Bending Moment based on 32000 psi minimum yield strength of siderail steel.
 
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